This is an article about the online communities of people who abstain from masturbation. It discusses the reasons people join these communities and the potential harms and benefits. Some people find these communities helpful in overcoming pornography addiction. However, there is concern that these communities spread inaccurate information and may overlap with extremist groups.
You are ignoring the OP article which makes it very clear that this movement definitely hurts someone, since it is ideologically linked to the far right, and is a huge right wing pipeline, literally being the cause of hatred and bigotry (at best).
Read literally a few sentences later. And use some critical thinking.
The HABITS don’t hurt anyone.
The BEHAVIOR/SOCIAL CONTEXT is.
If the dude doesn’t want to jack off, so be it. No problem. If the dude shames others , that’s an issue.